CN218101509U - Battery pack assembly and vehicle with same - Google Patents

Abstract

The utility model discloses a battery package subassembly and vehicle that has it, the battery package subassembly includes: a lower housing; the bottom guard plate is arranged below the lower shell; the bracket is arranged below the bottom guard plate; a fastening assembly that fastens the lower housing, the backplate, and the bracket. According to the utility model discloses battery package subassembly connects casing, end backplate and bracket down through fastening components, makes battery package and bracket integrate, and overall structure is compact, fixed reliable and stable, and assembly structure is simple, convenient assembling to be favorable to satisfying the requirement of battery package jumbo size, high continuation of the journey mileage, high security performance.

Description

Battery pack assembly and vehicle with same

Technical Field

The utility model relates to a vehicle technical field, more specifically relates to a battery package subassembly and vehicle that has it.

Background

In the related art, as the driving mileage requirement and the installation requirement of the electric automobile are more rigorous, the size of the battery pack is increased day by day, and the protection plate is added at the bottom of the battery pack to protect the battery pack, so that the battery pack is not easy to install and fix on the vehicle.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a battery package subassembly, battery package subassembly can satisfy the installation demand and the assembly structure simple and convenient of jumbo size battery package.

The utility model discloses still provide a vehicle that has above-mentioned battery package subassembly.

According to the utility model discloses battery package subassembly, include: a lower housing; the bottom guard plate is arranged below the lower shell; the bracket is arranged below the bottom guard plate; a fastening assembly that fastens the lower housing, the backplate, and the bracket.

According to the utility model discloses battery package subassembly connects casing, end backplate and bracket down through fastening components, makes battery package and bracket integrate, and overall structure is compact, fixed reliable and stable, and assembly structure is simple, convenient assembling to be favorable to satisfying the requirement of battery package jumbo size, high continuation of the journey mileage, high security performance.

In addition, the battery pack assembly according to the above embodiment of the present invention may further have the following additional technical features:

according to some embodiments of the invention, the fastening assembly comprises: a first fastener connecting the lower housing and the backplate; a second fastener connecting the first fastener and the bracket.

According to some embodiments of the utility model, the first fastener is equipped with the connecting hole, the outer peripheral face of first fastener has the external screw thread, the inner peripheral surface of connecting hole has the internal thread, the external screw thread with casing threaded connection down, the internal thread with second fastener threaded connection, wherein, the internal thread with the screw thread handedness of external screw thread is the same.

According to some embodiments of the invention, the first fastener comprises: the first connecting part penetrates through the bottom guard plate, and the upper end of the first connecting part is connected with the lower shell; the first flange part is arranged at the lower end of the first connecting part and protrudes out of the outer peripheral surface of the first connecting part, and the first flange part is abutted against the lower surface of the bottom protective plate and the upper surface of the bracket.

According to some embodiments of the invention, the second fastener comprises: the second connecting part penetrates through the bracket, and the upper end of the second connecting part is connected with the first fastener; and the second flange part is convexly arranged on the peripheral surface of the second connecting part and is abutted against the lower surface of the bracket.

According to some embodiments of the invention, the middle part of the lower housing is connected with the fastening component.

According to some embodiments of the invention, the lower housing comprises: the beam is a cross beam or a longitudinal beam, the lower end of the beam is provided with a connecting convex part, and the connecting convex part is in threaded connection with the fastening assembly.

According to some embodiments of the invention, the connecting protrusion is sealed with the bottom shield plate by a sealing member.

According to some embodiments of the invention, the lower housing further comprises a bottom plate having a via hole for the connection protrusion to pass through.

According to the utility model discloses vehicle includes according to the utility model discloses battery package subassembly.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a battery pack assembly according to an embodiment of the present invention;

fig. 2 is an enlarged schematic view of the structure of fig. 1 at circle a.

Reference numerals:

a battery pack assembly 100;

a lower case 10; a beam 11; a connecting boss 12; a welding area 13;

a bottom guard plate 20; a guard plate projection 21;

a bracket 30;

a fastening assembly 40; the first fastening member 41; a connection hole 411; a first connection portion 412; a first flange portion 413; a second fastener 42; a second connection portion 421; a second flange portion 422;

a seal 50.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "a first feature" or "a second feature" may include one or more of the features, and "a plurality" means two or more, and the first feature may be "on" or "under" the second feature, and may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature therebetween, and the first feature being "on", "above" and "above" the second feature may include the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is higher in level than the second feature.

The following describes a battery pack assembly 100 and a vehicle according to an embodiment of the present invention with reference to the drawings. According to the utility model discloses vehicle includes according to the utility model discloses battery package subassembly 100.

Referring to fig. 1 and 2, a battery pack assembly 100 according to an embodiment of the present invention may include a battery pack, which may include a lower case 10 and a bottom plate 20, a bracket 30, and a fastening assembly 40.

Specifically, the bottom protection plate 20 is disposed below the lower case 10 to shield and protect the lower case 10, so as to prevent the bottom of the lower case 10 from being broken down, and effectively protect the lower portion of the battery pack from being damaged by impact. The bracket 30 is arranged below the bottom guard plate 20, and the fastening assembly 40 fastens and connects the lower shell 10, the bottom guard plate 20 and the bracket 30. The bracket 30 can be used for being connected with a mounting position (such as a frame) of a vehicle to realize the mounting and fixing of the battery pack assembly 100 on the vehicle, and the battery pack is indirectly mounted on the vehicle through the bracket 30, so that the mounting position on the bracket 30 is more convenient to set, the battery pack can have a larger size, and the higher requirements of the vehicle on the endurance mileage and the safety performance are met.

In addition, realized integrating of battery package and bracket 30, lower casing 10, end backplate 20 and bracket 30 are through same fastening components 40 fastening connection, have improved fastening components 40's utilization ratio, and convenient assembling is simple, and is favorable to making the overall structure of battery package subassembly 100 compacter, and fixed effect is better.

According to the utility model discloses battery package subassembly 100 connects casing 10, end backplate 20 and bracket 30 down through fastening components 40, makes the battery package integrate with bracket 30, and overall structure is compact, fixed reliable and stable, and assembly structure is simple, convenient assembling to be favorable to satisfying the requirement of battery package jumbo size, high continuation of the journey mileage, high security performance.

Because according to the utility model discloses battery package subassembly 100 has above-mentioned profitable technological effect, consequently according to the utility model discloses the vehicle, connect down casing 10, end backplate 20 and bracket 30 through fastening components 40, make the battery package integrate with bracket 30, overall structure is compact, fixed reliable and stable, and assembly structure is simple, convenient assembling to be favorable to satisfying the requirement of battery package jumbo size, high continuation of the journey mileage, high security performance.

According to some embodiments of the present invention, as shown in fig. 2, the fastening assembly 40 comprises: a first fastening member 41 and a second fastening member 42, wherein the first fastening member 41 connects the lower case 10 and the floor panel 20, and the second fastening member 42 connects the first fastening member 41 and the bracket 30.

Specifically, end backplate 20 can be equipped with the backplate hole, and the backplate hole is worn to locate by first fastener 41 to make the upper end of first fastener 41 link to each other with lower casing 10, and the lower extreme of first fastener 41 can link to each other with second fastener 42, need not to set up in addition on the end backplate 20 and is connected the trompil with second fastener 42, has not only simplified end backplate 20's structure, has improved end backplate 20's structural strength, is favorable to improving the leakproofness of battery package subassembly 100 moreover.

In addition, in the production process, can connect end backplate 20 and lower casing 10 through first fastener 41 earlier, then carry out security performance such as leakproofness and detect, first fastener 41 and bracket 30 are connected to rethread second fastener 42 at last, guarantee that the battery package can satisfy national safety regulation requirement to each item performance detects conveniently.

In some embodiments, as shown in fig. 2, the first fastening member 41 is provided with a connection hole 411, an outer circumferential surface of the first fastening member 41 has an external thread, an inner circumferential surface of the connection hole 411 has an internal thread, the first fastening member 41 is threadedly connected with the lower housing 10 through the external thread, and the first fastening member 41 is threadedly connected with the second fastening member 42 through the internal thread, the first fastening member 41 and the second fastening member 42 are conveniently installed, for example, the first fastening member 41 can be screwed from the lower side of the bottom guard plate 20, and then the second fastening member 42 can be screwed from the lower side of the bracket 30, and the assembling operation is not easily interfered and affected by the structure.

Further, the internal thread of the first fastening member 41 is threaded in the same direction as the external thread. Therefore, during the process of tightening the second fastening member 42, the engagement state of the external thread of the first fastening member 41 and the lower housing 10 is not loosened, and the connection reliability is ensured.

It should be noted that the connecting hole 411 of the first fastening member 41 may be a through hole as shown in fig. 2, or may be a blind hole, which is within the protection scope of the present invention.

In some embodiments, as shown in fig. 2, the first fastening member 41 includes: a first connection portion 412 and a first flange portion 413. The first connecting portion 412 is disposed through the bottom protection plate 20, and an upper end of the first connecting portion 412 is connected to the lower housing 10, for example, the first connecting portion 412 may be a cylinder and an outer peripheral surface thereof is provided with an external thread to be connected to the lower housing 10 by a thread. In embodiments where the first connection portion 412 is provided with an internal thread and an external thread, the first fastening member 41 is formed as a double-threaded nut. The first flange 413 is disposed at a lower end of the first connection portion 412, and the first flange 413 protrudes from an outer circumferential surface of the first connection portion 412. After the first connecting portion 412 is connected to the lower housing 10, the first flange portion 413 may abut against the lower surface of the bottom protection plate 20, so that the bottom protection plate 20 is clamped between the first flange portion 413 and the lower housing 10, and reliable fixation is achieved.

Further, can be equipped with sealing member 50 between casing 10 and the end backplate 20 down, along with first fastener 41 is connected with casing 10 down and targets in place, backplate 20 at the end is compressed tightly to first flange portion 413 to backplate 20 and sealing member 50 at the bottom of effective crimping, sealing member 50 can seal the clearance between backplate 20 and the casing 10 down, avoids the battery package inner chamber to pass through backplate hole and external intercommunication, and the battery package forms seal structure, has guaranteed the gas tightness of whole package.

In addition, after the second fastening member 42 is installed in place, the first flange portion 413 may also abut against the upper surface of the bracket 30, so as to achieve reliable connection of the bottom guard plate 20, the lower shell 10 and the bracket 30.

In some embodiments, as shown in FIG. 2, the second fastener 42 includes: a second connecting portion 421 and a second flange portion 422. The second connecting portion 421 is disposed through the bracket 30, and an upper end of the second connecting portion 421 is connected to the first fastening member 41, for example, the first connecting portion 412 of the first fastening member 41. The first connection portion 412 may have a connection hole 411, an inner circumferential surface of the connection hole 411 is provided with an inner thread, the second connection portion 421 is a cylinder and an outer circumferential surface is provided with an outer thread, the second connection portion 421 extends into the connection hole 411 to achieve a threaded connection with the first connection portion 412, and the connection structure is simple and reliable.

The second flange portion 422 is protruded from the outer circumferential surface of the second connection portion 421, and here, the second flange portion 422 may be provided at the lower end of the second connection portion 421 or at the middle portion of the second connection portion 421. In a state where the second fastening member 42 is mounted in place, the second flange portion 422 may abut against the lower surface of the bracket 30 to achieve stable connection of the bracket 30 with the bottom cover 20 and the lower case 10. In the embodiment where the second connection portion 421 is provided with the external thread, the second fastening member 42 may be formed as a fastening bolt, which is simple in structure, easy to assemble, and firm in connection.

According to some embodiments of the present invention, as shown in fig. 1, the middle part of the lower shell 10 is connected with the fastening assembly 40, and the middle part of the corresponding bottom guard plate 20 is connected with the fastening assembly 40, so as to improve the bottom guard plate 20 and the lower shell 10 mode, thereby improving the structural stability.

In some embodiments, the lower case 10 may include a plurality of beams 11, and the beams 11 may be cross beams or longitudinal beams of the battery pack. The fastening assembly 40 may be connected to a plurality of beams 11, in other words a plurality of cross beams connected to the floor panels 20 and the brackets 30 by the fastening assembly 40, or a plurality of longitudinal beams connected to the floor panels 20 and the brackets 30 by the fastening assembly 40, or at least one cross beam and at least one longitudinal beam connected to the floor panels 20 and the brackets 30 by the fastening assembly 40.

For example, the bottom plate and four boundary beams of the battery pack are connected to define a mounting cavity for mounting the battery core, and the cross beams and the longitudinal beams are arranged in a crossed manner and mounted in the mounting cavity to improve the structural stability of the battery pack.

Further, as shown in fig. 2, the lower end of the beam 11 may be provided with a coupling protrusion 12, and the fastening assembly 40 is screw-coupled with the coupling protrusion 12 to achieve the coupling with the beam 11. The fastening assembly 40 is indirectly connected with the beam 11, so that the beam 11 can be arranged into a hollow structure and other special structures, and the connection reliability of the fastening assembly 40 is ensured. For example, the connecting boss 12 may be provided with a blind hole into which the upper end of the first fastening member 41 may protrude to be screwed with the connecting boss 12.

In some embodiments of the present invention, each beam 11 may be provided with at least one connecting protrusion 12, and the connecting protrusions 12 may be disposed in one-to-one correspondence with the fastening assemblies 40, so that the lower housing 10, the bottom protection plate 20, and the bracket 30 are connected by the plurality of fastening assemblies 40, thereby ensuring the connection stability.

In some embodiments, the connecting protrusion 12 and the beam 11 may be connected by welding, gluing, or the like. For example, as shown in fig. 2, the outer circumferential edge of the upper end of the connection projection 12 may be welded to the lower surface of the beam 11 to form an annular welding region 13, ensuring connection reliability.

In some embodiments, as shown in fig. 2, the connection protrusion 12 and the bottom cover 20 can be sealed by a sealing member 50, and after the first fastening member 41 is installed in place, the first fastening member 41 presses the bottom cover 20 to effectively press the bottom cover 20 and the sealing member 50, so as to seal the battery pack and ensure air tightness.

In some embodiments, the lower surface of the connection protrusion 12 may be provided with an annular mounting groove, and the sealing member 50 is partially embedded in the mounting groove, so that the sealing member 50 is not easily dislocated during the installation of the first fastening member 41 to affect the sealing effect.

According to some embodiments of the utility model, lower casing 10 can also include the bottom plate, and the bottom plate is located between roof beam 11 and end backplate 20 to support and protect the electric core of battery package subassembly 100, end backplate 20 then can protect the bottom plate, in order to avoid battery package subassembly 100 to take place the bottom and puncture the scheduling problem.

It should be noted that the term "bottom plate" is to be understood in a broad sense, that is, the bottom plate may be a common sheet metal part, or may be a cooling plate, that is, the bottom plate has a cooling function, and the bottom protection plate 20 is disposed below the cooling plate to prevent the cooling plate from being damaged.

In addition, the bottom plate may have a through hole, and the connecting protrusion 12 may pass through the through hole, so that the connecting protrusion 12 can be connected with the bottom guard plate 20 and the bracket 30 through the fastening assembly 40, and the bottom plate is limited, and sealing between the connecting protrusion 12 and the bottom guard plate 20 is facilitated.

In some embodiments, the bottom shield 20 may be provided with a shield projection 21 projecting upward, the fastening assembly 40 is inserted into the shield projection 21, and the connecting protrusion 12 is in sealing engagement with the shield projection 21. Further, the protector projection 21 can also be in sealing contact with the bottom plate to further improve the sealability of the battery pack.

In addition, the lower surface of the guard plate protrusion 21 may form a groove that is open downward, and in some embodiments where the fastening assembly 40 includes the first flange part 413, as shown in fig. 2, at least a portion of the first flange part 413 may be located in the groove and abut against the groove bottom surface of the groove, so that the structure is more compact, which is beneficial to reducing the height of the battery pack assembly 100.

Other constructions and operations of the battery pack assembly 100 and the vehicle according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present specification, references to the description of the terms "embodiment," "specific embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A battery pack assembly (100), comprising:

a lower case (10);

the bottom guard plate (20), the said bottom guard plate (20) locates below the said lower body (10);

the bracket (30) is arranged below the bottom guard plate (20);

a fastening assembly (40), wherein the fastening assembly (40) is used for fastening and connecting the lower shell (10), the bottom guard plate (20) and the bracket (30).

2. The battery pack assembly (100) of claim 1, wherein the fastening assembly (40) comprises:

a first fastener (41), the first fastener (41) connecting the lower shell (10) and the bottom guard plate (20);

a second fastener (42), the second fastener (42) connecting the first fastener (41) and the bracket (30).

3. The battery pack assembly (100) according to claim 2, wherein the first fastening member (41) is provided with a connection hole (411), an outer circumferential surface of the first fastening member (41) has an external thread, an inner circumferential surface of the connection hole (411) has an internal thread, the external thread is threadedly connected with the lower case (10), and the internal thread is threadedly connected with the second fastening member (42), wherein,

the thread turning directions of the internal thread and the external thread are the same.

4. The battery pack assembly (100) of claim 2, wherein the first fastener (41) comprises:

the first connecting part (412) penetrates through the bottom protection plate (20) and the upper end of the first connecting part (412) is connected with the lower shell (10);

and a first flange part (413), wherein the first flange part (413) is arranged at the lower end of the first connecting part (412) and protrudes out of the outer peripheral surface of the first connecting part (412), and the first flange part (413) is abutted against the lower surface of the bottom protection plate (20) and the upper surface of the bracket (30).

5. The battery pack assembly (100) of claim 2, wherein the second fastener (42) comprises:

the second connecting part (421) penetrates through the bracket (30) and the upper end of the second connecting part (421) is connected with the first fastening piece (41);

and a second flange portion (422), wherein the second flange portion (422) is provided to protrude from the outer peripheral surface of the second connecting portion (421), and abuts against the lower surface of the bracket (30).

6. The battery pack assembly (100) of claim 1, wherein the middle portion of the lower case (10) is connected to the fastening assembly (40).

7. The battery pack assembly (100) of any of claims 1-6, wherein the lower housing (10) comprises:

the beam structure comprises a plurality of beams (11), wherein the beams (11) are transverse beams or longitudinal beams, connecting convex parts (12) are arranged at the lower ends of the beams (11), and the connecting convex parts (12) are in threaded connection with fastening components (40).

8. The battery pack assembly (100) of claim 7, wherein the connection boss (12) and the backplate (20) are sealed by a seal member (50).

9. The battery pack assembly (100) of claim 7, wherein the lower case (10) further comprises a bottom plate having a through hole for passing the connection boss (12).

10. A vehicle characterized by comprising a battery pack assembly (100) according to any one of claims 1-9.

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